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Surveying the Ecological Effects of Fire on Alaska's Yukon-Kuskokwim Delta

Submitted by ORNL DAAC Staff on 2020-05-18
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Vegetation point-intercept (VPI) any-hit cover metric data were combined with Landsat imagery to develop fractional maps of any-hit cover for four aggregated plant functional types (PFTs);  shrubs bryophytes, lichen, and herbs for the upland tundra area of the Y-K Delta, Alaska. VPI data were collected from plots in areas burned in 1971, 1985, 2005, and 2015.

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Ecological field data and maps of vegetation cover spanning gradients of fire history in upland tundra are available from the Arctic-Boreal Vulnerability Experiment (ABoVE).

Boreal Forest Biomass and Soil Metrics at Burned Sites

Submitted by ORNL DAAC Staff on 2020-05-18
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Field sites, ecoregions, and total area burned (millions of hectares; Mha) in each of the ecoregions in the study domain over time. Grey dotted line in the inset represents the simple linear regression, with red shading for the 95% confidence intervals, of burned area for all ecoregions combined. Analyses were completed using the field site groupings, located within the six ecoregions defined by the EPA Level II Ecoregions of North America.

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Burned forest plot data is available from the Arctic-Boreal Vulnerability Experiment (ABoVE).

Burn Severity Index of Canadian Ecoregions

Submitted by ORNL DAAC Staff on 2020-02-17
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Study area included sites burned in 2014 and 2015 in the southeastern portion of the Northwest Territories and northern Alberta of Canada. The study area includes all 2014 and 2015 fires within a radius of approximately 300 km from Great Slave Lake.

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Pre- and post-fire Landsat images were used to classify burn severity of soil organic matter across portions of arctic Canada.

Alaskan Fire Fuel Components

Submitted by ORNL DAAC Staff on 2020-01-30
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Examples of fractional cover distribution in a tundra region near Lake Narvakrak in the Noatak River National Preserve: (a) very high-resolution imagery from Google Earth; (b) fractional cover of woody component; (b) fractional cover of herbaceous component; (d) fractional cover of nonvascular component.

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Maps of three major wildland fire fuel types are available from the Arctic-Boreal Vulnerability Experiment.

Vegetation Imagery from Toolik Lake, Alaska

Submitted by ggb on 2019-10-14
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A plot photo (#0656) taken at the largest study area 'Toolik' at elevation 765.7 m. The small white object was included in many of the photos as a color reference. The photographer's boots are also often visible, in this photo they are to the lower left of the white object.

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A new ABoVE dataset offers hundreds of ground-based vegetation photos which may serve as a reference for studies of climate and vegetation change in the area.

Tracking Fires in Central Kalimantan, Indonesia

Submitted by ORNL DAAC Staff on 2019-10-02
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The area burned in 1997 and 1998 in the Mawas area, Central Kalimantan, Indonesia is shown in pink. The inset with white dot shows the location of Mawas study site on the Island of Borneo.

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Maps of annual burned area from 1997 to 2015 show the extent of fires in the Mawas region of Central Kalimantan.

Vegetation and Carbon Impacts of Boreal Wildfires

Submitted by ORNL DAAC Staff on 2019-09-03
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Investigators collected field data and inventoried plots for vegetation species and growth in 2018 at a post-burn site. (Image Credit: Laura Bourgeau-Chavez)

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A new dataset completes four years of post-fire vegetation sampling at burned sites in Canada's Northwest Territories.

Does Boreal Wildfire Release "Old" Carbon?

Submitted by ORNL DAAC Staff on 2019-04-18
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Radiocarbon concentration (delta14C) in the atmosphere over time, showing the bomb peak in 1966 (red dotted line) and theoretical positions of delta14C of soil depth increments (points).

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Researchers with NASA's ABoVE field campaign measured soil and forest stand age at burned sites in Canada's Northwest Territories.